Abstract

Abstract Reaction of molybdenum hexacarbonyl with salicyl(2-pyridyl)aldazine leads to the formation of the dinuclear compound tetra(salicyl(2-pyridyl)aldazineato)-μ-oxodioxodimolybdenum(V). Reaction of the ligand with molybdenum pentachloride gives tris(salicyl(2-pyridyl)-aldazineato)oxomolybdenum(V) which reacts with thionyl chloride to form dicholortris(salicyl(2-pyridyl)aldazineato)molybdenum(V). The dicholoride undergoes a hydrogen chloride elimination reaction with aniline to give tris(salicyl(2-pyridyl)aldazineato)-bis(anilineato)molybdenum(V). Spin Hamiltonian parameters and e.s.r spectral linewidths have been determined from the e.s.r. spectra due to the molybdenum(V)chelates. Computer simulations of the S-band e.s.r. spectrum due to the dichlorotris(salicyl(2-pyridyl)aldazineato)molybdenum(V) points to a cis configuration of the chloride anion about the molybdenum(V) centre with one chloride anion in the of the predominantly 4dxy ground molybdenum(V) centre and the other chloride anion out of tha...

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